Integrated sea ice drift is predictable to about 16 days in the Arctic. This surprising result is an extension from Grumbine (1998), where there was no apparent decline of skill through the 6 days forecast lead at that time. Forecasts from 1998 to 2007 provide a further test of that, and a continued search for good measures of model skill. Index of Agreement, used in Grumbine (1998), turns out to be a poor skill measure for sea ice drift.